Visualizing Math

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The Universal Recycle Symbol is a Möbius Strip
In 1969 and early 1970, worldwide attention to environmental issues culminated in the first Earth Day. In response, then Chicago-based Container Corporation of America, a large producer of recycled paperboard which is now part of Smurfit-Stone Container, sponsored a contest for art and design students at high schools and colleges across the country to raise awareness of environmental issues. It was won by Gary Anderson, a 23-year-old college student at the University of Southern California, whose entry was the image now known as the universal recycling symbol. His entry was composed of three mutually chasing arrows that formed a Möbius strip (an unending single-sided looped surface).

The Universal Recycle Symbol is a Möbius Strip

In 1969 and early 1970, worldwide attention to environmental issues culminated in the first Earth Day. In response, then Chicago-based Container Corporation of America, a large producer of recycled paperboard which is now part of Smurfit-Stone Container, sponsored a contest for art and design students at high schools and colleges across the country to raise awareness of environmental issues. It was won by Gary Anderson, a 23-year-old college student at the University of Southern California, whose entry was the image now known as the universal recycling symbol. His entry was composed of three mutually chasing arrows that formed a Möbius strip (an unending single-sided looped surface).

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